CAJ | 학술논문

采用全三维定常数值方法研究轴向倾斜缝径向倾角变化对某单级跨声风扇性能及内部流场的影响，在该风扇上进行了两种常用不同倾角的数值研究。数值结果表明，两种不同倾角的机匣处理都提高了风扇的失速裕度，但也使得风扇的等熵效率减小。在相同机匣结构下，45。倾角比60。倾角的扩稳效果更好，效率损失也更小。另外，还详细分析了风扇内部流场，揭示了倾角变化对风扇性能影响的流动机理。
채용전삼유정상수치방법연구축향경사봉경향경각변화대모단급과성풍선성능급내부류장적영향，재해풍선상진행료량충상용불동경각적수치연구。수치결과표명，량충불동경각적궤갑처리도제고료풍선적실속유도，단야사득풍선적등적효솔감소。재상동궤갑결구하，45。경각비60。경각적확은효과경호，효솔손실야경소。령외，환상세분석료풍선내부류장，게시료경각변화대풍선성능영향적류동궤리。
The impact on performance and inner flow filed of the variety of radial obliquity of axial skewed slots for a single stage transonic fan was investigated with 3D steady numerical method. Two kinds of common different obliquity were researched in the fan. The numerical results showed that two kinds of different obliquity casing treatment not only increased the fan stall margin but also decreased the fan isentropic efficiency appreciably. For the same casing structure, the obliquity of 45 degree was prior to the obliquity of 60 degree in increasing stable operation range and efficiency. The fundamental flow mechanism was obtained by analyzing the fan flow field, which reveals the effects of different obliquity on fan performance.